--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qtransform/tst_qtransform.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,794 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtTest/QtTest>
+#include "qtransform.h"
+#include <math.h>
+#include <qpolygon.h>
+#include <qdebug.h>
+
+Q_DECLARE_METATYPE(QRect)
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QTransform : public QObject
+{
+ Q_OBJECT
+
+public:
+ tst_QTransform();
+ virtual ~tst_QTransform();
+
+
+public slots:
+ void init();
+ void cleanup();
+private slots:
+ void mapRect_data();
+ void operator_star_qrect_data();
+ void mapToPolygon_data();
+ void mapRect();
+ void operator_star_qrect();
+ void assignments();
+ void mapToPolygon();
+ void translate();
+ void scale();
+ void matrix();
+ void testOffset();
+ void types();
+ void scalarOps();
+ void transform();
+ void mapEmptyPath();
+ void boundingRect();
+ void controlPointRect();
+ void inverted_data();
+ void inverted();
+ void projectivePathMapping();
+ void mapInt();
+
+private:
+ void mapping_data();
+};
+
+Q_DECLARE_METATYPE(QTransform)
+Q_DECLARE_METATYPE(QPolygon)
+
+tst_QTransform::tst_QTransform()
+{
+}
+
+tst_QTransform::~tst_QTransform()
+{
+}
+
+void tst_QTransform::init()
+{
+ // No initialisation is required
+}
+
+void tst_QTransform::cleanup()
+{
+ // No cleanup is required.
+}
+
+#ifdef Q_OS_WIN32
+#define M_PI 3.14159265897932384626433832795f
+#endif
+
+void tst_QTransform::mapRect_data()
+{
+ mapping_data();
+
+ // rotations that are not multiples of 90 degrees. mapRect returns the bounding rect here.
+ qreal deg = -45;
+ QTest::newRow( "rot 45 a" )
+ << QTransform().rotate(deg)
+ << QRect( 0, 0, 10, 10 )
+ << QPolygon( QRect( 0, -7, 14, 14 ) );
+ QTest::newRow( "rot 45 b" )
+ << QTransform().rotate(deg)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 21, -14, 50, 49 ) );
+ QTest::newRow( "rot 45 c" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 10, 10 )
+ << QPolygon( QRect( 0, -71, 141, 142 ) );
+ QTest::newRow( "rot 45 d" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 212, -141, 495, 495 ) );
+
+ deg = 45;
+ QTest::newRow( "rot -45 a" )
+ << QTransform().rotate(deg)
+ << QRect( 0, 0, 10, 10 )
+ << QPolygon( QRect( -7, 0, 14, 14 ) );
+ QTest::newRow( "rot -45 b" )
+ << QTransform().rotate(deg)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -35, 21, 49, 50 ) );
+ QTest::newRow( "rot -45 c" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 10, 10 )
+ << QPolygon( QRect( -71, 0, 142, 141 ) );
+ QTest::newRow( "rot -45 d" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -354, 212, 495, 495 ) );
+}
+
+void tst_QTransform::operator_star_qrect_data()
+{
+ mapping_data();
+}
+
+void tst_QTransform::mapToPolygon_data()
+{
+ mapping_data();
+}
+
+void tst_QTransform::mapping_data()
+{
+ //create the testtable instance and define the elements
+ QTest::addColumn<QTransform>("matrix");
+ QTest::addColumn<QRect>("src");
+ QTest::addColumn<QPolygon>("res");
+
+ //next we fill it with data
+
+ // identity
+ QTest::newRow( "identity" )
+ << QTransform()
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 10, 20, 30, 40 ) );
+ // scaling
+ QTest::newRow( "scale 0" )
+ << QTransform().scale(2, 2)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 20, 40, 60, 80 ) );
+ QTest::newRow( "scale 1" )
+ << QTransform().scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 100, 200, 300, 400 ) );
+ // mirroring
+ QTest::newRow( "mirror 0" )
+ << QTransform().scale(-1, 1)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -40, 20, 30, 40 ) );
+ QTest::newRow( "mirror 1" )
+ << QTransform().scale(1, -1)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 10, -60, 30, 40 ) );
+ QTest::newRow( "mirror 2" )
+ << QTransform().scale(-1, -1)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -40, -60, 30, 40 ) );
+ QTest::newRow( "mirror 3" )
+ << QTransform().scale(-2, -2)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -80, -120, 60, 80 ) );
+ QTest::newRow( "mirror 4" )
+ << QTransform().scale(-10, -10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -400, -600, 300, 400 ) );
+ QTest::newRow( "mirror 5" )
+ << QTransform().scale(-1, 1)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -30, 0, 30, 40 ) );
+ QTest::newRow( "mirror 6" )
+ << QTransform().scale(1, -1)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( 0, -40, 30, 40 ) );
+ QTest::newRow( "mirror 7" )
+ << QTransform().scale(-1, -1)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -30, -40, 30, 40 ) );
+ QTest::newRow( "mirror 8" )
+ << QTransform().scale(-2, -2)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -60, -80, 60, 80 ) );
+ QTest::newRow( "mirror 9" )
+ << QTransform().scale(-10, -10) << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -300, -400, 300, 400 ) );
+
+ // rotations
+ float deg = 0.;
+ QTest::newRow( "rot 0 a" )
+ << QTransform().rotate(deg)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon ( QRect( 0, 0, 30, 40 ) );
+ deg = 0.00001f;
+ QTest::newRow( "rot 0 b" )
+ << QTransform().rotate(deg)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon ( QRect( 0, 0, 30, 40 ) );
+ deg = 0.;
+ QTest::newRow( "rot 0 c" )
+ << QTransform().rotate(deg)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon ( QRect( 10, 20, 30, 40 ) );
+ deg = 0.00001f;
+ QTest::newRow( "rot 0 d" )
+ << QTransform().rotate(deg)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon ( QRect( 10, 20, 30, 40 ) );
+
+ // rotations
+ deg = -90.f;
+ QTest::newRow( "rotscale 90 a" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( 0, -300, 400, 300 ) );
+ deg = -90.00001f;
+ QTest::newRow( "rotscale 90 b" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( 0, -300, 400, 300 ) );
+ deg = -90.f;
+ QTest::newRow( "rotscale 90 c" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 200, -400, 400, 300 ) );
+ deg = -90.00001f;
+ QTest::newRow( "rotscale 90 d" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( 200, -400, 400, 300 ) );
+
+ deg = 180.f;
+ QTest::newRow( "rotscale 180 a" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -300, -400, 300, 400 ) );
+ deg = 180.000001f;
+ QTest::newRow( "rotscale 180 b" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -300, -400, 300, 400 ) );
+ deg = 180.f;
+ QTest::newRow( "rotscale 180 c" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -400, -600, 300, 400 ) );
+ deg = 180.000001f;
+ QTest::newRow( "rotscale 180 d" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -400, -600, 300, 400 ) );
+
+ deg = -270.f;
+ QTest::newRow( "rotscale 270 a" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -400, 0, 400, 300 ) );
+ deg = -270.0000001f;
+ QTest::newRow( "rotscale 270 b" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 0, 0, 30, 40 )
+ << QPolygon( QRect( -400, 0, 400, 300 ) );
+ deg = -270.f;
+ QTest::newRow( "rotscale 270 c" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -600, 100, 400, 300 ) );
+ deg = -270.000001f;
+ QTest::newRow( "rotscale 270 d" )
+ << QTransform().rotate(deg).scale(10, 10)
+ << QRect( 10, 20, 30, 40 )
+ << QPolygon( QRect( -600, 100, 400, 300 ) );
+}
+
+void tst_QTransform::mapRect()
+{
+ QFETCH( QTransform, matrix );
+ QFETCH( QRect, src );
+ QFETCH( QPolygon, res );
+ QRect mapped = matrix.mapRect(src);
+ QCOMPARE( mapped, res.boundingRect().adjusted(0, 0, -1, -1) );
+
+ QRectF r = matrix.mapRect(QRectF(src));
+ QRect ir(r.topLeft().toPoint(), r.bottomRight().toPoint() - QPoint(1, 1));
+ QCOMPARE( mapped, ir );
+}
+
+void tst_QTransform::operator_star_qrect()
+{
+#if 0
+ QFETCH( QTransform, matrix );
+ QFETCH( QRect, src );
+ QFETCH( QPolygon, res );
+
+ QCOMPARE( (matrix * src), QRegion(res) );
+#endif
+}
+
+void tst_QTransform::assignments()
+{
+ QTransform m;
+ m.scale(2, 3);
+ m.rotate(45);
+ m.shear(4, 5);
+
+ QTransform c1(m);
+
+ QCOMPARE(m.m11(), c1.m11());
+ QCOMPARE(m.m12(), c1.m12());
+ QCOMPARE(m.m21(), c1.m21());
+ QCOMPARE(m.m22(), c1.m22());
+ QCOMPARE(m.dx(), c1.dx());
+ QCOMPARE(m.dy(), c1.dy());
+
+ QTransform c2 = m;
+ QCOMPARE(m.m11(), c2.m11());
+ QCOMPARE(m.m12(), c2.m12());
+ QCOMPARE(m.m21(), c2.m21());
+ QCOMPARE(m.m22(), c2.m22());
+ QCOMPARE(m.dx(), c2.dx());
+ QCOMPARE(m.dy(), c2.dy());
+}
+
+
+void tst_QTransform::mapToPolygon()
+{
+ QFETCH( QTransform, matrix );
+ QFETCH( QRect, src );
+ QFETCH( QPolygon, res );
+
+ QPolygon poly = matrix.mapToPolygon(src);
+
+ // don't care about starting point
+ bool equal = false;
+ for (int i = 0; i < poly.size(); ++i) {
+ QPolygon rot;
+ for (int j = i; j < poly.size(); ++j)
+ rot << poly[j];
+ for (int j = 0; j < i; ++j)
+ rot << poly[j];
+ if (rot == res)
+ equal = true;
+ }
+
+ QVERIFY(equal);
+}
+
+
+void tst_QTransform::translate()
+{
+ QTransform m( 1, 2, 3, 4, 5, 6 );
+ QTransform res2( m );
+ QTransform res( 1, 2, 3, 4, 75, 106 );
+ m.translate( 10, 20 );
+ QVERIFY( m == res );
+ m.translate( -10, -20 );
+ QVERIFY( m == res2 );
+ QVERIFY( QTransform::fromTranslate( 0, 0 ).type() == QTransform::TxNone );
+ QVERIFY( QTransform::fromTranslate( 10, 0 ).type() == QTransform::TxTranslate );
+ QVERIFY( QTransform::fromTranslate( -1, 5 ) == QTransform().translate( -1, 5 ));
+ QVERIFY( QTransform::fromTranslate( 0, 0 ) == QTransform());
+}
+
+void tst_QTransform::scale()
+{
+ QTransform m( 1, 2, 3, 4, 5, 6 );
+ QTransform res2( m );
+ QTransform res( 10, 20, 60, 80, 5, 6 );
+ m.scale( 10, 20 );
+ QVERIFY( m == res );
+ m.scale( 1./10., 1./20. );
+ QVERIFY( m == res2 );
+ QVERIFY( QTransform::fromScale( 1, 1 ).type() == QTransform::TxNone );
+ QVERIFY( QTransform::fromScale( 2, 4 ).type() == QTransform::TxScale );
+ QVERIFY( QTransform::fromScale( 2, 4 ) == QTransform().scale( 2, 4 ));
+ QVERIFY( QTransform::fromScale( 1, 1 ) == QTransform());
+}
+
+void tst_QTransform::matrix()
+{
+ QMatrix mat1;
+ mat1.scale(0.3, 0.7);
+ mat1.translate(53.3, 94.4);
+ mat1.rotate(45);
+
+ QMatrix mat2;
+ mat2.rotate(33);
+ mat2.scale(0.6, 0.6);
+ mat2.translate(13.333, 7.777);
+
+ QTransform tran1(mat1);
+ QTransform tran2(mat2);
+ QTransform dummy;
+ dummy.setMatrix(mat1.m11(), mat1.m12(), 0,
+ mat1.m21(), mat1.m22(), 0,
+ mat1.dx(), mat1.dy(), 1);
+
+ QVERIFY(tran1 == dummy);
+ QVERIFY(tran1.inverted() == dummy.inverted());
+ QVERIFY(tran1.inverted() == QTransform(mat1.inverted()));
+ QVERIFY(tran2.inverted() == QTransform(mat2.inverted()));
+
+ QMatrix mat3 = mat1 * mat2;
+ QTransform tran3 = tran1 * tran2;
+ QVERIFY(QTransform(mat3) == tran3);
+
+ /* QMatrix::operator==() doesn't use qFuzzyCompare(), which
+ * on win32-g++ results in a failure. So we work around it by
+ * calling QTranform::operator==(), which performs a fuzzy compare. */
+ QCOMPARE(QTransform(mat3), QTransform(tran3.toAffine()));
+
+ QTransform tranInv = tran1.inverted();
+ QMatrix matInv = mat1.inverted();
+
+ QRect rect(43, 70, 200, 200);
+ QPoint pt(43, 66);
+ QVERIFY(tranInv.map(pt) == matInv.map(pt));
+ QVERIFY(tranInv.map(pt) == matInv.map(pt));
+
+ QPainterPath path;
+ path.moveTo(55, 60);
+ path.lineTo(110, 110);
+ path.quadTo(220, 50, 10, 20);
+ path.closeSubpath();
+ QVERIFY(tranInv.map(path) == matInv.map(path));
+}
+
+void tst_QTransform::testOffset()
+{
+ QTransform trans;
+ const QMatrix &aff = trans.toAffine();
+ QCOMPARE((void*)(&aff), (void*)(&trans));
+}
+
+void tst_QTransform::types()
+{
+ QTransform m1;
+ QCOMPARE(m1.type(), QTransform::TxNone);
+
+ m1.translate(1.0f, 0.0f);
+ QCOMPARE(m1.type(), QTransform::TxTranslate);
+ QCOMPARE(m1.inverted().type(), QTransform::TxTranslate);
+
+ m1.scale(1.0f, 2.0f);
+ QCOMPARE(m1.type(), QTransform::TxScale);
+ QCOMPARE(m1.inverted().type(), QTransform::TxScale);
+
+ m1.rotate(45.0f);
+ QCOMPARE(m1.type(), QTransform::TxRotate);
+ QCOMPARE(m1.inverted().type(), QTransform::TxRotate);
+
+ m1.shear(0.5f, 0.25f);
+ QCOMPARE(m1.type(), QTransform::TxShear);
+ QCOMPARE(m1.inverted().type(), QTransform::TxShear);
+
+ m1.rotate(45.0f, Qt::XAxis);
+ QCOMPARE(m1.type(), QTransform::TxProject);
+ m1.shear(0.5f, 0.25f);
+ QCOMPARE(m1.type(), QTransform::TxProject);
+ m1.rotate(45.0f);
+ QCOMPARE(m1.type(), QTransform::TxProject);
+ m1.scale(1.0f, 2.0f);
+ QCOMPARE(m1.type(), QTransform::TxProject);
+ m1.translate(1.0f, 0.0f);
+ QCOMPARE(m1.type(), QTransform::TxProject);
+
+ QTransform m2(1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ -1.0f, -1.0f, 1.0f);
+
+ QCOMPARE(m2.type(), QTransform::TxTranslate);
+ QCOMPARE((m1 * m2).type(), QTransform::TxProject);
+
+ m1 *= QTransform();
+ QCOMPARE(m1.type(), QTransform::TxProject);
+
+ m1 *= QTransform(1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ 1.0f, 0.0f, 1.0f);
+ QCOMPARE(m1.type(), QTransform::TxProject);
+
+ m2.reset();
+ QCOMPARE(m2.type(), QTransform::TxNone);
+
+ m2.setMatrix(1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxNone);
+
+ m2 *= QTransform();
+ QCOMPARE(m2.type(), QTransform::TxNone);
+
+ m2.setMatrix(2.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxScale);
+ m2 *= QTransform();
+ QCOMPARE(m2.type(), QTransform::TxScale);
+
+ m2.setMatrix(0.0f, 1.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxRotate);
+ m2 *= QTransform();
+ QCOMPARE(m2.type(), QTransform::TxRotate);
+
+ m2.setMatrix(1.0f, 0.0f, 0.5f,
+ 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxProject);
+ m2 *= QTransform();
+ QCOMPARE(m2.type(), QTransform::TxProject);
+
+ m2.setMatrix(1.0f, 1.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxShear);
+
+ m2 *= m2.inverted();
+ QCOMPARE(m2.type(), QTransform::TxNone);
+
+ m2.translate(5.0f, 5.0f);
+ m2.rotate(45.0f);
+ m2.rotate(-45.0f);
+ QCOMPARE(m2.type(), QTransform::TxTranslate);
+
+ m2.scale(2.0f, 3.0f);
+ m2.shear(1.0f, 0.0f);
+ m2.shear(-1.0f, 0.0f);
+ QCOMPARE(m2.type(), QTransform::TxScale);
+
+ m2 *= QTransform(1.0f, 1.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxShear);
+
+ m2 *= QTransform(1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ 1.0f, 0.0f, 1.0f);
+ QCOMPARE(m2.type(), QTransform::TxShear);
+
+ QTransform m3(1.8f, 0.0f, 0.0f,
+ 0.0f, 1.8f, 0.0f,
+ 0.0f, 0.0f, 1.0f);
+
+ QCOMPARE(m3.type(), QTransform::TxScale);
+ m3.translate(5.0f, 5.0f);
+ QCOMPARE(m3.type(), QTransform::TxScale);
+ QCOMPARE(m3.inverted().type(), QTransform::TxScale);
+
+ m3.setMatrix(1.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 2.0f);
+ QCOMPARE(m3.type(), QTransform::TxProject);
+
+ m3.setMatrix(0.0f, 2.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 2.0f);
+ QCOMPARE(m3.type(), QTransform::TxProject);
+
+ QTransform m4;
+ m4.scale(5, 5);
+ m4.translate(4, 2);
+ m4.rotate(45);
+
+ QCOMPARE(m4.type(), QTransform::TxRotate);
+}
+
+
+void tst_QTransform::scalarOps()
+{
+ QTransform t;
+ QCOMPARE(t.m11(), 1.);
+ QCOMPARE(t.m33(), 1.);
+ QCOMPARE(t.m21(), 0.);
+
+ t = QTransform() + 3;
+ QCOMPARE(t.m11(), 4.);
+ QCOMPARE(t.m33(), 4.);
+ QCOMPARE(t.m21(), 3.);
+
+ t = t - 3;
+ QCOMPARE(t.m11(), 1.);
+ QCOMPARE(t.m33(), 1.);
+ QCOMPARE(t.m21(), 0.);
+ QCOMPARE(t.isIdentity(), true);
+
+ t += 3;
+ t = t * 2;
+ QCOMPARE(t.m11(), 8.);
+ QCOMPARE(t.m33(), 8.);
+ QCOMPARE(t.m21(), 6.);
+}
+
+void tst_QTransform::transform()
+{
+ QTransform t;
+ t.rotate(30, Qt::YAxis);
+ t.translate(15, 10);
+ t.scale(2, 2);
+ t.rotate(30);
+ t.shear(0.5, 0.5);
+
+ QTransform a, b, c, d, e;
+ a.rotate(30, Qt::YAxis);
+ b.translate(15, 10);
+ c.scale(2, 2);
+ d.rotate(30);
+ e.shear(0.5, 0.5);
+
+ QVERIFY(qFuzzyCompare(t, e * d * c * b * a));
+}
+
+void tst_QTransform::mapEmptyPath()
+{
+ QPainterPath path;
+ path.moveTo(10, 10);
+ path.lineTo(10, 10);
+ QCOMPARE(QTransform().map(path), path);
+}
+
+void tst_QTransform::boundingRect()
+{
+ QPainterPath path;
+ path.moveTo(10, 10);
+ path.lineTo(10, 10);
+ QCOMPARE(path.boundingRect(), QRectF(10, 10, 0, 0));
+}
+
+void tst_QTransform::controlPointRect()
+{
+ QPainterPath path;
+ path.moveTo(10, 10);
+ path.lineTo(10, 10);
+ QCOMPARE(path.controlPointRect(), QRectF(10, 10, 0, 0));
+}
+
+void tst_QTransform::inverted_data()
+{
+ QTest::addColumn<QTransform>("matrix");
+
+ QTest::newRow("identity")
+ << QTransform();
+
+ QTest::newRow("TxTranslate")
+ << QTransform().translate(200, 10);
+
+ QTest::newRow("TxScale")
+ << QTransform().scale(5, 2);
+
+ QTest::newRow("TxTranslate TxScale")
+ << QTransform().translate(100, -10).scale(40, 2);
+
+ QTest::newRow("TxScale TxTranslate")
+ << QTransform().scale(40, 2).translate(100, -10);
+
+ QTest::newRow("TxRotate")
+ << QTransform().rotate(40, Qt::ZAxis);
+
+ QTest::newRow("TxRotate TxScale")
+ << QTransform().rotate(60, Qt::ZAxis).scale(2, 0.25);
+
+ QTest::newRow("TxScale TxRotate")
+ << QTransform().scale(2, 0.25).rotate(30, Qt::ZAxis);
+
+ QTest::newRow("TxRotate TxScale TxTranslate")
+ << QTransform().rotate(60, Qt::ZAxis).scale(2, 0.25).translate(200, -3000);
+
+ QTest::newRow("TxRotate TxTranslate TxScale")
+ << QTransform().rotate(60, Qt::ZAxis).translate(200, -3000).scale(19, 77);
+
+ QTest::newRow("TxShear")
+ << QTransform().shear(10, 10);
+
+ QTest::newRow("TxShear TxRotate")
+ << QTransform().shear(10, 10).rotate(45, Qt::ZAxis);
+
+ QTest::newRow("TxShear TxRotate TxScale")
+ << QTransform().shear(10, 10).rotate(45, Qt::ZAxis).scale(19, 81);
+
+ QTest::newRow("TxTranslate TxShear TxRotate TxScale")
+ << QTransform().translate(150, -1).shear(10, 10).rotate(45, Qt::ZAxis).scale(19, 81);
+
+ const qreal s = 500000;
+
+ QTransform big;
+ big.scale(s, s);
+
+ QTest::newRow("big") << big;
+
+ QTransform small;
+ small.scale(1/s, 1/s);
+
+ QTest::newRow("small") << small;
+}
+
+void tst_QTransform::inverted()
+{
+ if (sizeof(qreal) != sizeof(double))
+ QSKIP("precision error if qreal is not double", SkipAll);
+
+ QFETCH(QTransform, matrix);
+
+ const QTransform inverted = matrix.inverted();
+
+ QVERIFY(matrix.isIdentity() == inverted.isIdentity());
+ QVERIFY(matrix.type() == inverted.type());
+
+ QVERIFY((matrix * inverted).isIdentity());
+ QVERIFY((inverted * matrix).isIdentity());
+}
+
+void tst_QTransform::projectivePathMapping()
+{
+ QPainterPath path;
+ path.addRect(-50, -50, 100, 100);
+
+ const QRectF view(0, 0, 1024, 1024);
+
+ QVERIFY(view.intersects(path.boundingRect()));
+
+ for (int i = 0; i < 85; i += 5) {
+ QTransform transform;
+ transform.translate(512, 512);
+ transform.rotate(i, Qt::YAxis);
+
+ const QPainterPath mapped = transform.map(path);
+
+ QVERIFY(view.intersects(mapped.boundingRect()));
+ QVERIFY(transform.inverted().mapRect(view).intersects(path.boundingRect()));
+ }
+}
+
+void tst_QTransform::mapInt()
+{
+ int x = 0;
+ int y = 0;
+
+ QTransform::fromTranslate(10, 10).map(x, y, &x, &y);
+
+ QCOMPARE(x, 10);
+ QCOMPARE(y, 10);
+}
+
+QTEST_APPLESS_MAIN(tst_QTransform)
+
+
+#include "tst_qtransform.moc"